// SPDX-License-Identifier: GPL-2.0-or-later
/*
* vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
* Copyright (C) 1992 Eric Youngdale
* Simulate a host adapter with 2 disks attached. Do a lot of checking
* to make sure that we are not getting blocks mixed up, and PANIC if
* anything out of the ordinary is seen.
* ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
*
* Copyright (C) 2001 - 2021 Douglas Gilbert
*
* For documentation see http://sg.danny.cz/sg/scsi_debug.html
*/
#define pr_fmt(fmt) KBUILD_MODNAME
":%s: " fmt, __func__
#include <linux/module.h>
#include <linux/align.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/jiffies.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/vmalloc.h>
#include <linux/moduleparam.h>
#include <linux/scatterlist.h>
#include <linux/blkdev.h>
#include <linux/crc-t10dif.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/atomic.h>
#include <linux/hrtimer.h>
#include <linux/uuid.h>
#include <linux/t10-pi.h>
#include <linux/msdos_partition.h>
#include <linux/random.h>
#include <linux/xarray.h>
#include <linux/prefetch.h>
#include <linux/debugfs.h>
#include <linux/async.h>
#include <linux/cleanup.h>
#include <net/checksum.h>
#include <linux/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsicam.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_dbg.h>
#include "sd.h"
#include "scsi_logging.h"
/* make sure inq_product_rev string corresponds to this version */
#define SDEBUG_VERSION
"0191" /* format to fit INQUIRY revision field */
static const char *sdebug_version_date =
"20210520";
#define MY_NAME
"scsi_debug"
/* Additional Sense Code (ASC) */
#define NO_ADDITIONAL_SENSE 0x0
#define OVERLAP_ATOMIC_COMMAND_ASC 0x0
#define OVERLAP_ATOMIC_COMMAND_ASCQ 0x23
#define FILEMARK_DETECTED_ASCQ 0x1
#define EOP_EOM_DETECTED_ASCQ 0x2
#define BEGINNING_OF_P_M_DETECTED_ASCQ 0x4
#define EOD_DETECTED_ASCQ 0x5
#define LOGICAL_UNIT_NOT_READY 0x4
#define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8
#define UNRECOVERED_READ_ERR 0x11
#define PARAMETER_LIST_LENGTH_ERR 0x1a
#define INVALID_OPCODE 0x20
#define LBA_OUT_OF_RANGE 0x21
#define INVALID_FIELD_IN_CDB 0x24
#define INVALID_FIELD_IN_PARAM_LIST 0x26
#define WRITE_PROTECTED 0x27
#define UA_READY_ASC 0x28
#define UA_RESET_ASC 0x29
#define UA_CHANGED_ASC 0x2a
#define TOO_MANY_IN_PARTITION_ASC 0x3b
#define TARGET_CHANGED_ASC 0x3f
#define LUNS_CHANGED_ASCQ 0x0e
#define INSUFF_RES_ASC 0x55
#define INSUFF_RES_ASCQ 0x3
#define POWER_ON_RESET_ASCQ 0x0
#define POWER_ON_OCCURRED_ASCQ 0x1
#define BUS_RESET_ASCQ 0x2
/* scsi bus reset occurred */
#define MODE_CHANGED_ASCQ 0x1
/* mode parameters changed */
#define CAPACITY_CHANGED_ASCQ 0x9
#define SAVING_PARAMS_UNSUP 0x39
#define TRANSPORT_PROBLEM 0x4b
#define THRESHOLD_EXCEEDED 0x5d
#define LOW_POWER_COND_ON 0x5e
#define MISCOMPARE_VERIFY_ASC 0x1d
#define MICROCODE_CHANGED_ASCQ 0x1
/* with TARGET_CHANGED_ASC */
#define MICROCODE_CHANGED_WO_RESET_ASCQ 0x16
#define WRITE_ERROR_ASC 0xc
#define UNALIGNED_WRITE_ASCQ 0x4
#define WRITE_BOUNDARY_ASCQ 0x5
#define READ_INVDATA_ASCQ 0x6
#define READ_BOUNDARY_ASCQ 0x7
#define ATTEMPT_ACCESS_GAP 0x9
#define INSUFF_ZONE_ASCQ 0xe
/* see drivers/scsi/sense_codes.h */
/* Additional Sense Code Qualifier (ASCQ) */
#define ACK_NAK_TO 0x3
/* Default values for driver parameters */
#define DEF_NUM_HOST 1
#define DEF_NUM_TGTS 1
#define DEF_MAX_LUNS 1
/* With these defaults, this driver will make 1 host with 1 target
* (id 0) containing 1 logical unit (lun 0). That is 1 device.
*/
#define DEF_ATO 1
#define DEF_CDB_LEN 10
#define DEF_JDELAY 1
/* if > 0 unit is a jiffy */
#define DEF_DEV_SIZE_PRE_INIT 0
#define DEF_DEV_SIZE_MB 8
#define DEF_ZBC_DEV_SIZE_MB 128
#define DEF_DIF 0
#define DEF_DIX 0
#define DEF_PER_HOST_STORE
false
#define DEF_D_SENSE 0
#define DEF_EVERY_NTH 0
#define DEF_FAKE_RW 0
#define DEF_GUARD 0
#define DEF_HOST_LOCK 0
#define DEF_LBPU 0
#define DEF_LBPWS 0
#define DEF_LBPWS10 0
#define DEF_LBPRZ 1
#define DEF_LOWEST_ALIGNED 0
#define DEF_NDELAY 0
/* if > 0 unit is a nanosecond */
#define DEF_NO_LUN_0 0
#define DEF_NUM_PARTS 0
#define DEF_OPTS 0
#define DEF_OPT_BLKS 1024
#define DEF_PHYSBLK_EXP 0
#define DEF_OPT_XFERLEN_EXP 0
#define DEF_PTYPE TYPE_DISK
#define DEF_RANDOM
false
#define DEF_REMOVABLE
false
#define DEF_SCSI_LEVEL 7
/* INQUIRY, byte2 [6->SPC-4; 7->SPC-5] */
#define DEF_SECTOR_SIZE 512
#define DEF_UNMAP_ALIGNMENT 0
#define DEF_UNMAP_GRANULARITY 1
#define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF
#define DEF_UNMAP_MAX_DESC 256
#define DEF_VIRTUAL_GB 0
#define DEF_VPD_USE_HOSTNO 1
#define DEF_WRITESAME_LENGTH 0xFFFF
#define DEF_ATOMIC_WR 0
#define DEF_ATOMIC_WR_MAX_LENGTH 128
#define DEF_ATOMIC_WR_ALIGN 2
#define DEF_ATOMIC_WR_GRAN 2
#define DEF_ATOMIC_WR_MAX_LENGTH_BNDRY (DEF_ATOMIC_WR_MAX_LENGTH)
#define DEF_ATOMIC_WR_MAX_BNDRY 128
#define DEF_STRICT 0
#define DEF_STATISTICS
false
#define DEF_SUBMIT_QUEUES 1
#define DEF_TUR_MS_TO_READY 0
#define DEF_UUID_CTL 0
#define JDELAY_OVERRIDDEN -9999
/* Default parameters for ZBC drives */
#define DEF_ZBC_ZONE_SIZE_MB 128
#define DEF_ZBC_MAX_OPEN_ZONES 8
#define DEF_ZBC_NR_CONV_ZONES 1
/* Default parameters for tape drives */
#define TAPE_DEF_DENSITY 0x0
#define TAPE_BAD_DENSITY 0x65
#define TAPE_DEF_BLKSIZE 0
#define TAPE_MIN_BLKSIZE 512
#define TAPE_MAX_BLKSIZE 1048576
#define TAPE_EW 20
#define TAPE_MAX_PARTITIONS 2
#define TAPE_UNITS 10000
#define TAPE_PARTITION_1_UNITS 1000
/* The tape block data definitions */
#define TAPE_BLOCK_FM_FLAG ((u32)0x1 << 30)
#define TAPE_BLOCK_EOD_FLAG ((u32)0x2 << 30)
#define TAPE_BLOCK_MARK_MASK ((u32)0x3 << 30)
#define TAPE_BLOCK_SIZE_MASK (~TAPE_BLOCK_MARK_MASK)
#define TAPE_BLOCK_MARK(a) (a & TAPE_BLOCK_MARK_MASK)
#define TAPE_BLOCK_SIZE(a) (a & TAPE_BLOCK_SIZE_MASK)
#define IS_TAPE_BLOCK_FM(a) ((a & TAPE_BLOCK_FM_FLAG) != 0)
#define IS_TAPE_BLOCK_EOD(a) ((a & TAPE_BLOCK_EOD_FLAG) != 0)
struct tape_block {
u32 fl_size;
unsigned char data[4];
};
/* Flags for sense data */
#define SENSE_FLAG_FILEMARK 0x80
#define SENSE_FLAG_EOM 0x40
#define SENSE_FLAG_ILI 0x20
#define SDEBUG_LUN_0_VAL 0
/* bit mask values for sdebug_opts */
#define SDEBUG_OPT_NOISE 1
#define SDEBUG_OPT_MEDIUM_ERR 2
#define SDEBUG_OPT_TIMEOUT 4
#define SDEBUG_OPT_RECOVERED_ERR 8
#define SDEBUG_OPT_TRANSPORT_ERR 16
#define SDEBUG_OPT_DIF_ERR 32
#define SDEBUG_OPT_DIX_ERR 64
#define SDEBUG_OPT_MAC_TIMEOUT 128
#define SDEBUG_OPT_SHORT_TRANSFER 0x100
#define SDEBUG_OPT_Q_NOISE 0x200
#define SDEBUG_OPT_ALL_TSF 0x400
/* ignore */
#define SDEBUG_OPT_RARE_TSF 0x800
#define SDEBUG_OPT_N_WCE 0x1000
#define SDEBUG_OPT_RESET_NOISE 0x2000
#define SDEBUG_OPT_NO_CDB_NOISE 0x4000
#define SDEBUG_OPT_HOST_BUSY 0x8000
#define SDEBUG_OPT_CMD_ABORT 0x10000
#define SDEBUG_OPT_ALL_NOISE (SDEBUG_OPT_NOISE | SDEBUG_OPT_Q_NOISE | \
SDEBUG_OPT_RESET_NOISE)
#define SDEBUG_OPT_ALL_INJECTING (SDEBUG_OPT_RECOVERED_ERR | \
SDEBUG_OPT_TRANSPORT_ERR | \
SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR | \
SDEBUG_OPT_SHORT_TRANSFER | \
SDEBUG_OPT_HOST_BUSY | \
SDEBUG_OPT_CMD_ABORT)
#define SDEBUG_OPT_RECOV_DIF_DIX (SDEBUG_OPT_RECOVERED_ERR | \
SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR)
/* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs) are returned in
* priority order. In the subset implemented here lower numbers have higher
* priority. The UA numbers should be a sequence starting from 0 with
* SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */
#define SDEBUG_UA_POR 0
/* Power on, reset, or bus device reset */
#define SDEBUG_UA_POOCCUR 1
/* Power on occurred */
#define SDEBUG_UA_BUS_RESET 2
#define SDEBUG_UA_MODE_CHANGED 3
#define SDEBUG_UA_CAPACITY_CHANGED 4
#define SDEBUG_UA_LUNS_CHANGED 5
#define SDEBUG_UA_MICROCODE_CHANGED 6
/* simulate firmware change */
#define SDEBUG_UA_MICROCODE_CHANGED_WO_RESET 7
#define SDEBUG_UA_NOT_READY_TO_READY 8
#define SDEBUG_NUM_UAS 9
/* when 1==SDEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this
* sector on read commands: */
#define OPT_MEDIUM_ERR_ADDR 0x1234
/* that's sector 4660 in decimal */
#define OPT_MEDIUM_ERR_NUM 10
/* number of consecutive medium errs */
/* SDEBUG_CANQUEUE is the maximum number of commands that can be queued
* (for response) per submit queue at one time. Can be reduced by max_queue
* option. Command responses are not queued when jdelay=0 and ndelay=0. The
* per-device DEF_CMD_PER_LUN can be changed via sysfs:
* /sys/class/scsi_device/<h:c:t:l>/device/queue_depth
* but cannot exceed SDEBUG_CANQUEUE .
*/
#define SDEBUG_CANQUEUE_WORDS 3
/* a WORD is bits in a long */
#define SDEBUG_CANQUEUE (SDEBUG_CANQUEUE_WORDS * BITS_PER_LONG)
#define DEF_CMD_PER_LUN SDEBUG_CANQUEUE
/* UA - Unit Attention; SA - Service Action; SSU - Start Stop Unit */
#define F_D_IN 1
/* Data-in command (e.g. READ) */
#define F_D_OUT 2
/* Data-out command (e.g. WRITE) */
#define F_D_OUT_MAYBE 4
/* WRITE SAME, NDOB bit */
#define F_D_UNKN 8
#define F_RL_WLUN_OK 0x10
/* allowed with REPORT LUNS W-LUN */
#define F_SKIP_UA 0x20
/* bypass UAs (e.g. INQUIRY command) */
#define F_DELAY_OVERR 0x40
/* for commands like INQUIRY */
#define F_SA_LOW 0x80
/* SA is in cdb byte 1, bits 4 to 0 */
#define F_SA_HIGH 0x100
/* SA is in cdb bytes 8 and 9 */
#define F_INV_OP 0x200
/* invalid opcode (not supported) */
#define F_FAKE_RW 0x400
/* bypass resp_*() when fake_rw set */
#define F_M_ACCESS 0x800
/* media access, reacts to SSU state */
#define F_SSU_DELAY 0x1000
/* SSU command delay (long-ish) */
#define F_SYNC_DELAY 0x2000
/* SYNCHRONIZE CACHE delay */
/* Useful combinations of the above flags */
#define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR)
#define FF_MEDIA_IO (F_M_ACCESS | F_FAKE_RW)
#define FF_SA (F_SA_HIGH | F_SA_LOW)
#define F_LONG_DELAY (F_SSU_DELAY | F_SYNC_DELAY)
/* Device selection bit mask */
#define DS_ALL 0xffffffff
#define DS_SBC (1 << TYPE_DISK)
#define DS_SSC (1 << TYPE_TAPE)
#define DS_ZBC (1 << TYPE_ZBC)
#define DS_NO_SSC (DS_ALL & ~DS_SSC)
#define SDEBUG_MAX_PARTS 4
#define SDEBUG_MAX_CMD_LEN 32
#define SDEB_XA_NOT_IN_USE XA_MARK_1
/* Zone types (zbcr05 table 25) */
enum sdebug_z_type {
ZBC_ZTYPE_CNV = 0x1,
ZBC_ZTYPE_SWR = 0x2,
ZBC_ZTYPE_SWP = 0x3,
/* ZBC_ZTYPE_SOBR = 0x4, */
ZBC_ZTYPE_GAP = 0x5,
};
/* enumeration names taken from table 26, zbcr05 */
enum sdebug_z_cond {
ZBC_NOT_WRITE_POINTER = 0x0,
ZC1_EMPTY = 0x1,
ZC2_IMPLICIT_OPEN = 0x2,
ZC3_EXPLICIT_OPEN = 0x3,
ZC4_CLOSED = 0x4,
ZC6_READ_ONLY = 0xd,
ZC5_FULL = 0xe,
ZC7_OFFLINE = 0xf,
};
struct sdeb_zone_state {
/* ZBC: per zone state */
enum sdebug_z_type z_type;
enum sdebug_z_cond z_cond;
bool z_non_seq_resource;
unsigned int z_size;
sector_t z_start;
sector_t z_wp;
};
enum sdebug_err_type {
ERR_TMOUT_CMD = 0,
/* make specific scsi command timeout */
ERR_FAIL_QUEUE_CMD = 1,
/* make specific scsi command's */
/* queuecmd return failed */
ERR_FAIL_CMD = 2,
/* make specific scsi command's */
/* queuecmd return succeed but */
/* with errors set in scsi_cmnd */
ERR_ABORT_CMD_FAILED = 3,
/* control return FAILED from */
/* scsi_debug_abort() */
ERR_LUN_RESET_FAILED = 4,
/* control return FAILED from */
/* scsi_debug_device_reseLUN_RESET_FAILEDt() */
};
struct sdebug_err_inject {
int type;
struct list_head list;
int cnt;
unsigned char cmd;
struct rcu_head rcu;
union {
/*
* For ERR_FAIL_QUEUE_CMD
*/
int queuecmd_ret;
/*
* For ERR_FAIL_CMD
*/
struct {
unsigned char host_byte;
unsigned char driver_byte;
unsigned char status_byte;
unsigned char sense_key;
unsigned char asc;
unsigned char asq;
};
};
};
struct sdebug_dev_info {
struct list_head dev_list;
unsigned int channel;
unsigned int target;
u64 lun;
uuid_t lu_name;
struct sdebug_host_info *sdbg_host;
unsigned long uas_bm[1];
atomic_t stopped;
/* 1: by SSU, 2: device start */
bool used;
/* For ZBC devices */
bool zoned;
unsigned int zcap;
unsigned int zsize;
unsigned int zsize_shift;
unsigned int nr_zones;
unsigned int nr_conv_zones;
unsigned int nr_seq_zones;
unsigned int nr_imp_open;
unsigned int nr_exp_open;
unsigned int nr_closed;
unsigned int max_open;
ktime_t create_ts;
/* time since bootup that this device was created */
struct sdeb_zone_state *zstate;
/* For tapes */
unsigned int tape_blksize;
unsigned int tape_density;
unsigned char tape_partition;
unsigned char tape_nbr_partitions;
unsigned char tape_pending_nbr_partitions;
unsigned int tape_pending_part_0_size;
unsigned int tape_pending_part_1_size;
unsigned char tape_dce;
unsigned int tape_location[TAPE_MAX_PARTITIONS];
unsigned int tape_eop[TAPE_MAX_PARTITIONS];
struct tape_block *tape_blocks[TAPE_MAX_PARTITIONS];
struct dentry *debugfs_entry;
struct spinlock list_lock;
struct list_head inject_err_list;
};
struct sdebug_target_info {
bool reset_fail;
struct dentry *debugfs_entry;
};
struct sdebug_host_info {
struct list_head host_list;
int si_idx;
/* sdeb_store_info (per host) xarray index */
struct Scsi_Host *shost;
struct device dev;
struct list_head dev_info_list;
};
/* There is an xarray of pointers to this struct's objects, one per host */
struct sdeb_store_info {
rwlock_t macc_data_lck;
/* for media data access on this store */
rwlock_t macc_meta_lck;
/* for atomic media meta access on this store */
rwlock_t macc_sector_lck;
/* per-sector media data access on this store */
u8 *storep;
/* user data storage (ram) */
struct t10_pi_tuple *dif_storep;
/* protection info */
void *map_storep;
/* provisioning map */
};
#define dev_to_sdebug_host(d) \
container_of(d,
struct sdebug_host_info, dev)
#define shost_to_sdebug_host(shost) \
dev_to_sdebug_host(shost->dma_dev)
enum sdeb_defer_type {SDEB_DEFER_NONE = 0, SDEB_DEFER_HRT = 1,
SDEB_DEFER_WQ = 2, SDEB_DEFER_POLL = 3};
struct sdebug_defer {
struct hrtimer hrt;
struct execute_work ew;
ktime_t cmpl_ts;
/* time since boot to complete this cmd */
int issuing_cpu;
bool aborted;
/* true when blk_abort_request() already called */
enum sdeb_defer_type defer_t;
};
struct sdebug_scsi_cmd {
spinlock_t lock;
struct sdebug_defer sd_dp;
};
static atomic_t sdebug_cmnd_count;
/* number of incoming commands */
static atomic_t sdebug_completions;
/* count of deferred completions */
static atomic_t sdebug_miss_cpus;
/* submission + completion cpus differ */
static atomic_t sdebug_a_tsf;
/* 'almost task set full' counter */
static atomic_t sdeb_inject_pending;
static atomic_t sdeb_mq_poll_count;
/* bumped when mq_poll returns > 0 */
struct opcode_info_t {
u8 num_attached;
/* 0 if this is it (i.e. a leaf); use 0xff */
/* for terminating element */
u8 opcode;
/* if num_attached > 0, preferred */
u16 sa;
/* service action */
u32 devsel;
/* device type mask for this definition */
u32 flags;
/* OR-ed set of SDEB_F_* */
int (*pfp)(
struct scsi_cmnd *,
struct sdebug_dev_info *);
const struct opcode_info_t *arrp;
/* num_attached elements or NULL */
u8 len_mask[16];
/* len_mask[0]-->cdb_len, then mask for cdb */
/* 1 to min(cdb_len, 15); ignore cdb[15...] */
};
/* SCSI opcodes (first byte of cdb) of interest mapped onto these indexes */
enum sdeb_opcode_index {
SDEB_I_INVALID_OPCODE = 0,
SDEB_I_INQUIRY = 1,
SDEB_I_REPORT_LUNS = 2,
SDEB_I_REQUEST_SENSE = 3,
SDEB_I_TEST_UNIT_READY = 4,
SDEB_I_MODE_SENSE = 5,
/* 6, 10 */
SDEB_I_MODE_SELECT = 6,
/* 6, 10 */
SDEB_I_LOG_SENSE = 7,
SDEB_I_READ_CAPACITY = 8,
/* 10; 16 is in SA_IN(16) */
SDEB_I_READ = 9,
/* 6, 10, 12, 16 */
SDEB_I_WRITE = 10,
/* 6, 10, 12, 16 */
SDEB_I_START_STOP = 11,
SDEB_I_SERV_ACT_IN_16 = 12,
/* add ...SERV_ACT_IN_12 if needed */
SDEB_I_SERV_ACT_OUT_16 = 13,
/* add ...SERV_ACT_OUT_12 if needed */
SDEB_I_MAINT_IN = 14,
SDEB_I_MAINT_OUT = 15,
SDEB_I_VERIFY = 16,
/* VERIFY(10), VERIFY(16) */
SDEB_I_VARIABLE_LEN = 17,
/* READ(32), WRITE(32), WR_SCAT(32) */
SDEB_I_RESERVE = 18,
/* 6, 10 */
SDEB_I_RELEASE = 19,
/* 6, 10 */
SDEB_I_ALLOW_REMOVAL = 20,
/* PREVENT ALLOW MEDIUM REMOVAL */
SDEB_I_REZERO_UNIT = 21,
/* REWIND in SSC */
SDEB_I_ATA_PT = 22,
/* 12, 16 */
SDEB_I_SEND_DIAG = 23,
SDEB_I_UNMAP = 24,
SDEB_I_WRITE_BUFFER = 25,
SDEB_I_WRITE_SAME = 26,
/* 10, 16 */
SDEB_I_SYNC_CACHE = 27,
/* 10, 16 */
SDEB_I_COMP_WRITE = 28,
SDEB_I_PRE_FETCH = 29,
/* 10, 16 */
SDEB_I_ZONE_OUT = 30,
/* 0x94+SA; includes no data xfer */
SDEB_I_ZONE_IN = 31,
/* 0x95+SA; all have data-in */
SDEB_I_ATOMIC_WRITE_16 = 32,
SDEB_I_READ_BLOCK_LIMITS = 33,
SDEB_I_LOCATE = 34,
SDEB_I_WRITE_FILEMARKS = 35,
SDEB_I_SPACE = 36,
SDEB_I_FORMAT_MEDIUM = 37,
SDEB_I_ERASE = 38,
SDEB_I_LAST_ELEM_P1 = 39,
/* keep this last (previous + 1) */
};
static const unsigned char opcode_ind_arr[256] = {
/* 0x0; 0x0->0x1f: 6 byte cdbs */
SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE,
SDEB_I_FORMAT_MEDIUM, SDEB_I_READ_BLOCK_LIMITS, 0, 0,
SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0,
SDEB_I_WRITE_FILEMARKS, SDEB_I_SPACE, SDEB_I_INQUIRY, 0, 0,
SDEB_I_MODE_SELECT, SDEB_I_RESERVE, SDEB_I_RELEASE,
0, SDEB_I_ERASE, SDEB_I_MODE_SENSE, SDEB_I_START_STOP, 0, SDEB_I_SEND_DIAG,
SDEB_I_ALLOW_REMOVAL, 0,
/* 0x20; 0x20->0x3f: 10 byte cdbs */
0, 0, 0, 0, 0, SDEB_I_READ_CAPACITY, 0, 0,
SDEB_I_READ, 0, SDEB_I_WRITE, SDEB_I_LOCATE, 0, 0, 0, SDEB_I_VERIFY,
0, 0, 0, 0, SDEB_I_PRE_FETCH, SDEB_I_SYNC_CACHE, 0, 0,
0, 0, 0, SDEB_I_WRITE_BUFFER, 0, 0, 0, 0,
/* 0x40; 0x40->0x5f: 10 byte cdbs */
0, SDEB_I_WRITE_SAME, SDEB_I_UNMAP, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, SDEB_I_LOG_SENSE, 0, 0,
0, 0, 0, 0, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE,
SDEB_I_RELEASE,
0, 0, SDEB_I_MODE_SENSE, 0, 0, 0, 0, 0,
/* 0x60; 0x60->0x7d are reserved, 0x7e is "extended cdb" */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, SDEB_I_VARIABLE_LEN,
/* 0x80; 0x80->0x9f: 16 byte cdbs */
0, 0, 0, 0, 0, SDEB_I_ATA_PT, 0, 0,
SDEB_I_READ, SDEB_I_COMP_WRITE, SDEB_I_WRITE, 0,
0, 0, 0, SDEB_I_VERIFY,
SDEB_I_PRE_FETCH, SDEB_I_SYNC_CACHE, 0, SDEB_I_WRITE_SAME,
SDEB_I_ZONE_OUT, SDEB_I_ZONE_IN, 0, 0,
0, 0, 0, 0,
SDEB_I_ATOMIC_WRITE_16, 0, SDEB_I_SERV_ACT_IN_16, SDEB_I_SERV_ACT_OUT_16,
/* 0xa0; 0xa0->0xbf: 12 byte cdbs */
SDEB_I_REPORT_LUNS, SDEB_I_ATA_PT, 0, SDEB_I_MAINT_IN,
SDEB_I_MAINT_OUT, 0, 0, 0,
SDEB_I_READ, 0
/* SDEB_I_SERV_ACT_OUT_12 */, SDEB_I_WRITE,
0
/* SDEB_I_SERV_ACT_IN_12 */, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
/* 0xc0; 0xc0->0xff: vendor specific */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
/*
* The following "response" functions return the SCSI mid-level's 4 byte
* tuple-in-an-int. To handle commands with an IMMED bit, for a faster
* command completion, they can mask their return value with
* SDEG_RES_IMMED_MASK .
*/
#define SDEG_RES_IMMED_MASK 0x40000000
static int resp_inquiry(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_report_luns(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_requests(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_mode_sense(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_mode_select(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_log_sense(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_readcap(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_read_dt0(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_read_tape(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_write_dt0(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_write_tape(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_write_scat(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_start_stop(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_readcap16(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_get_lba_status(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_get_stream_status(
struct scsi_cmnd *scp,
struct sdebug_dev_info *devip);
static int resp_report_tgtpgs(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_unmap(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_rsup_opcodes(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_rsup_tmfs(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_verify(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_write_same_10(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_write_same_16(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_comp_write(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_write_buffer(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_sync_cache(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_pre_fetch(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_report_zones(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_atomic_write(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_open_zone(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_close_zone(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_finish_zone(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_rwp_zone(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_read_blklimits(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_locate(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_write_filemarks(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_space(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_read_position(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_rewind(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_format_medium(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int resp_erase(
struct scsi_cmnd *,
struct sdebug_dev_info *);
static int sdebug_do_add_host(
bool mk_new_store);
static int sdebug_add_host_helper(
int per_host_idx);
static void sdebug_do_remove_host(
bool the_end);
static int sdebug_add_store(
void);
static void sdebug_erase_store(
int idx,
struct sdeb_store_info *sip);
static void sdebug_erase_all_stores(
bool apart_from_first);
/*
* The following are overflow arrays for cdbs that "hit" the same index in
* the opcode_info_arr array. The most time sensitive (or commonly used) cdb
* should be placed in opcode_info_arr[], the others should be placed here.
*/
static const struct opcode_info_t msense_iarr[] = {
{0, 0x1a, 0, DS_ALL, F_D_IN, NULL, NULL,
{6, 0xe8, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
};
static const struct opcode_info_t mselect_iarr[] = {
{0, 0x15, 0, DS_ALL, F_D_OUT, NULL, NULL,
{6, 0xf1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
};
static const struct opcode_info_t read_iarr[] = {
{0, 0x28, 0, DS_NO_SSC, F_D_IN | FF_MEDIA_IO, resp_read_dt0, NULL,
/* READ(10) */
{10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0,
0, 0, 0, 0} },
{0, 0x8, 0, DS_NO_SSC, F_D_IN | FF_MEDIA_IO, resp_read_dt0, NULL,
/* READ(6) disk */
{6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x8, 0, DS_SSC, F_D_IN | FF_MEDIA_IO, resp_read_tape, NULL,
/* READ(6) tape */
{6, 0x03, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0xa8, 0, DS_NO_SSC, F_D_IN | FF_MEDIA_IO, resp_read_dt0, NULL,
/* READ(12) */
{12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xbf,
0xc7, 0, 0, 0, 0} },
};
static const struct opcode_info_t write_iarr[] = {
{0, 0x2a, 0, DS_NO_SSC, F_D_OUT | FF_MEDIA_IO, resp_write_dt0,
/* WRITE(10) */
NULL, {10, 0xfb, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7,
0, 0, 0, 0, 0, 0} },
{0, 0xa, 0, DS_NO_SSC, F_D_OUT | FF_MEDIA_IO, resp_write_dt0,
/* WRITE(6) disk */
NULL, {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0} },
{0, 0xa, 0, DS_SSC, F_D_OUT | FF_MEDIA_IO, resp_write_tape,
/* WRITE(6) tape */
NULL, {6, 0x01, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0} },
{0, 0xaa, 0, DS_NO_SSC, F_D_OUT | FF_MEDIA_IO, resp_write_dt0,
/* WRITE(12) */
NULL, {12, 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xbf, 0xc7, 0, 0, 0, 0} },
};
static const struct opcode_info_t verify_iarr[] = {
{0, 0x2f, 0, DS_NO_SSC, F_D_OUT_MAYBE | FF_MEDIA_IO, resp_verify,
/* VERIFY(10) */
NULL, {10, 0xf7, 0xff, 0xff, 0xff, 0xff, 0xbf, 0xff, 0xff, 0xc7,
0, 0, 0, 0, 0, 0} },
};
static const struct opcode_info_t sa_in_16_iarr[] = {
{0, 0x9e, 0x12, DS_NO_SSC, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL,
{16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0, 0xc7} },
/* GET LBA STATUS(16) */
{0, 0x9e, 0x16, DS_NO_SSC, F_SA_LOW | F_D_IN, resp_get_stream_status, NULL,
{16, 0x16, 0, 0, 0xff, 0xff, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff,
0, 0} },
/* GET STREAM STATUS */
};
static const struct opcode_info_t vl_iarr[] = {
/* VARIABLE LENGTH */
{0, 0x7f, 0xb, DS_NO_SSC, F_SA_HIGH | F_D_OUT | FF_MEDIA_IO, resp_write_dt0,
NULL, {32, 0xc7, 0, 0, 0, 0, 0x3f, 0x18, 0x0, 0xb, 0xfa,
0, 0xff, 0xff, 0xff, 0xff} },
/* WRITE(32) */
{0, 0x7f, 0x11, DS_NO_SSC, F_SA_HIGH | F_D_OUT | FF_MEDIA_IO, resp_write_scat,
NULL, {32, 0xc7, 0, 0, 0, 0, 0x3f, 0x18, 0x0, 0x11, 0xf8,
0, 0xff, 0xff, 0x0, 0x0} },
/* WRITE SCATTERED(32) */
};
static const struct opcode_info_t maint_in_iarr[] = {
/* MAINT IN */
{0, 0xa3, 0xc, DS_ALL, F_SA_LOW | F_D_IN, resp_rsup_opcodes, NULL,
{12, 0xc, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0,
0xc7, 0, 0, 0, 0} },
/* REPORT SUPPORTED OPERATION CODES */
{0, 0xa3, 0xd, DS_ALL, F_SA_LOW | F_D_IN, resp_rsup_tmfs, NULL,
{12, 0xd, 0x80, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0,
0, 0} },
/* REPORTED SUPPORTED TASK MANAGEMENT FUNCTIONS */
};
static const struct opcode_info_t write_same_iarr[] = {
{0, 0x93, 0, DS_NO_SSC, F_D_OUT_MAYBE | FF_MEDIA_IO, resp_write_same_16, NULL,
{16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x3f, 0xc7} },
/* WRITE SAME(16) */
};
static const struct opcode_info_t reserve_iarr[] = {
{0, 0x16, 0, DS_ALL, F_D_OUT, NULL, NULL,
/* RESERVE(6) */
{6, 0x1f, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
};
static const struct opcode_info_t release_iarr[] = {
{0, 0x17, 0, DS_ALL, F_D_OUT, NULL, NULL,
/* RELEASE(6) */
{6, 0x1f, 0xff, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
};
static const struct opcode_info_t sync_cache_iarr[] = {
{0, 0x91, 0, DS_NO_SSC, F_SYNC_DELAY | F_M_ACCESS, resp_sync_cache, NULL,
{16, 0x6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x3f, 0xc7} },
/* SYNC_CACHE (16) */
};
static const struct opcode_info_t pre_fetch_iarr[] = {
{0, 0x90, 0, DS_NO_SSC, F_SYNC_DELAY | FF_MEDIA_IO, resp_pre_fetch, NULL,
{16, 0x2, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x3f, 0xc7} },
/* PRE-FETCH (16) */
{0, 0x34, 0, DS_SSC, F_SYNC_DELAY | FF_MEDIA_IO, resp_read_position, NULL,
{10, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xc7, 0, 0,
0, 0, 0, 0} },
/* READ POSITION (10) */
};
static const struct opcode_info_t zone_out_iarr[] = {
/* ZONE OUT(16) */
{0, 0x94, 0x1, DS_NO_SSC, F_SA_LOW | F_M_ACCESS, resp_close_zone, NULL,
{16, 0x1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0, 0, 0xff, 0xff, 0x1, 0xc7} },
/* CLOSE ZONE */
{0, 0x94, 0x2, DS_NO_SSC, F_SA_LOW | F_M_ACCESS, resp_finish_zone, NULL,
{16, 0x2, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0, 0, 0xff, 0xff, 0x1, 0xc7} },
/* FINISH ZONE */
{0, 0x94, 0x4, DS_NO_SSC, F_SA_LOW | F_M_ACCESS, resp_rwp_zone, NULL,
{16, 0x4, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0, 0, 0xff, 0xff, 0x1, 0xc7} },
/* RESET WRITE POINTER */
};
static const struct opcode_info_t zone_in_iarr[] = {
/* ZONE IN(16) */
{0, 0x95, 0x6, DS_NO_SSC, F_SA_LOW | F_D_IN | F_M_ACCESS, NULL, NULL,
{16, 0x6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x3f, 0xc7} },
/* REPORT ZONES */
};
/* This array is accessed via SDEB_I_* values. Make sure all are mapped,
* plus the terminating elements for logic that scans this table such as
* REPORT SUPPORTED OPERATION CODES. */
static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEM_P1 + 1] = {
/* 0 */
{0, 0, 0, DS_ALL, F_INV_OP | FF_RESPOND, NULL, NULL,
/* unknown opcodes */
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x12, 0, DS_ALL, FF_RESPOND | F_D_IN, resp_inquiry, NULL,
/* INQUIRY */
{6, 0xe3, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0xa0, 0, DS_ALL, FF_RESPOND | F_D_IN, resp_report_luns, NULL,
{12, 0xe3, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0,
0, 0} },
/* REPORT LUNS */
{0, 0x3, 0, DS_ALL, FF_RESPOND | F_D_IN, resp_requests, NULL,
{6, 0xe1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x0, 0, DS_ALL, F_M_ACCESS | F_RL_WLUN_OK, NULL, NULL,
/* TEST UNIT READY */
{6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
/* 5 */
{ARRAY_SIZE(msense_iarr), 0x5a, 0, DS_ALL, F_D_IN,
/* MODE SENSE(10) */
resp_mode_sense, msense_iarr, {10, 0xf8, 0xff, 0xff, 0, 0, 0,
0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} },
{ARRAY_SIZE(mselect_iarr), 0x55, 0, DS_ALL, F_D_OUT,
/* MODE SELECT(10) */
resp_mode_select, mselect_iarr, {10, 0xf1, 0, 0, 0, 0, 0, 0xff,
0xff, 0xc7, 0, 0, 0, 0, 0, 0} },
{0, 0x4d, 0, DS_NO_SSC, F_D_IN, resp_log_sense, NULL,
/* LOG SENSE */
{10, 0xe3, 0xff, 0xff, 0, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0,
0, 0, 0} },
{0, 0x25, 0, DS_NO_SSC, F_D_IN, resp_readcap, NULL,
/* READ CAPACITY(10) */
{10, 0xe1, 0xff, 0xff, 0xff, 0xff, 0, 0, 0x1, 0xc7, 0, 0, 0, 0,
0, 0} },
{ARRAY_SIZE(read_iarr), 0x88, 0, DS_NO_SSC, F_D_IN | FF_MEDIA_IO,
/* READ(16) */
resp_read_dt0, read_iarr, {16, 0xfe, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7} },
/* 10 */
{ARRAY_SIZE(write_iarr), 0x8a, 0, DS_NO_SSC, F_D_OUT | FF_MEDIA_IO,
resp_write_dt0, write_iarr,
/* WRITE(16) */
{16, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xc7} },
{0, 0x1b, 0, DS_ALL, F_SSU_DELAY, resp_start_stop, NULL,
/* START STOP UNIT */
{6, 0x1, 0, 0xf, 0xf7, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{ARRAY_SIZE(sa_in_16_iarr), 0x9e, 0x10, DS_NO_SSC, F_SA_LOW | F_D_IN,
resp_readcap16, sa_in_16_iarr,
/* SA_IN(16), READ CAPACITY(16) */
{16, 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x1, 0xc7} },
{0, 0x9f, 0x12, DS_NO_SSC, F_SA_LOW | F_D_OUT | FF_MEDIA_IO, resp_write_scat,
NULL, {16, 0x12, 0xf9, 0x0, 0xff, 0xff, 0, 0, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xc7} },
/* SA_OUT(16), WRITE SCAT(16) */
{ARRAY_SIZE(maint_in_iarr), 0xa3, 0xa, DS_ALL, F_SA_LOW | F_D_IN,
resp_report_tgtpgs,
/* MAINT IN, REPORT TARGET PORT GROUPS */
maint_in_iarr, {12, 0xea, 0, 0, 0, 0, 0xff, 0xff, 0xff,
0xff, 0, 0xc7, 0, 0, 0, 0} },
/* 15 */
{0, 0, 0, DS_ALL, F_INV_OP | FF_RESPOND, NULL, NULL,
/* MAINT OUT */
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{ARRAY_SIZE(verify_iarr), 0x8f, 0, DS_NO_SSC,
F_D_OUT_MAYBE | FF_MEDIA_IO, resp_verify,
/* VERIFY(16) */
verify_iarr, {16, 0xf6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xc7} },
{ARRAY_SIZE(vl_iarr), 0x7f, 0x9, DS_NO_SSC, F_SA_HIGH | F_D_IN | FF_MEDIA_IO,
resp_read_dt0, vl_iarr,
/* VARIABLE LENGTH, READ(32) */
{32, 0xc7, 0, 0, 0, 0, 0x3f, 0x18, 0x0, 0x9, 0xfe, 0, 0xff, 0xff,
0xff, 0xff} },
{ARRAY_SIZE(reserve_iarr), 0x56, 0, DS_ALL, F_D_OUT,
NULL, reserve_iarr,
/* RESERVE(10) <no response function> */
{10, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0,
0} },
{ARRAY_SIZE(release_iarr), 0x57, 0, DS_ALL, F_D_OUT,
NULL, release_iarr,
/* RELEASE(10) <no response function> */
{10, 0x13, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0,
0} },
/* 20 */
{0, 0x1e, 0, DS_ALL, 0, NULL, NULL,
/* ALLOW REMOVAL */
{6, 0, 0, 0, 0x3, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x1, 0, DS_SSC, 0, resp_rewind, NULL,
{6, 0x1, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0, 0, DS_NO_SSC, F_INV_OP | FF_RESPOND, NULL, NULL,
/* ATA_PT */
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x1d, 0, DS_ALL, F_D_OUT, NULL, NULL,
/* SEND DIAGNOSTIC */
{6, 0xf7, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x42, 0, DS_NO_SSC, F_D_OUT | FF_MEDIA_IO, resp_unmap, NULL,
/* UNMAP */
{10, 0x1, 0, 0, 0, 0, 0x3f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} },
/* 25 */
{0, 0x3b, 0, DS_NO_SSC, F_D_OUT_MAYBE, resp_write_buffer, NULL,
{10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0,
0, 0, 0, 0} },
/* WRITE_BUFFER */
{ARRAY_SIZE(write_same_iarr), 0x41, 0, DS_NO_SSC, F_D_OUT_MAYBE | FF_MEDIA_IO,
resp_write_same_10, write_same_iarr,
/* WRITE SAME(10) */
{10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0,
0, 0, 0, 0, 0} },
{ARRAY_SIZE(sync_cache_iarr), 0x35, 0, DS_NO_SSC, F_SYNC_DELAY | F_M_ACCESS,
resp_sync_cache, sync_cache_iarr,
{10, 0x7, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0,
0, 0, 0, 0} },
/* SYNC_CACHE (10) */
{0, 0x89, 0, DS_NO_SSC, F_D_OUT | FF_MEDIA_IO, resp_comp_write, NULL,
{16, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0,
0, 0xff, 0x3f, 0xc7} },
/* COMPARE AND WRITE */
{ARRAY_SIZE(pre_fetch_iarr), 0x34, 0, DS_NO_SSC, F_SYNC_DELAY | FF_MEDIA_IO,
resp_pre_fetch, pre_fetch_iarr,
{10, 0x2, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0,
0, 0, 0, 0} },
/* PRE-FETCH (10) */
/* READ POSITION (10) */
/* 30 */
{ARRAY_SIZE(zone_out_iarr), 0x94, 0x3, DS_NO_SSC, F_SA_LOW | F_M_ACCESS,
resp_open_zone, zone_out_iarr,
/* ZONE_OUT(16), OPEN ZONE) */
{16, 0x3
/* SA */, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x0, 0x0, 0xff, 0xff, 0x1, 0xc7} },
{ARRAY_SIZE(zone_in_iarr), 0x95, 0x0, DS_NO_SSC, F_SA_LOW | F_M_ACCESS,
resp_report_zones, zone_in_iarr,
/* ZONE_IN(16), REPORT ZONES) */
{16, 0x0
/* SA */, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xbf, 0xc7} },
/* 32 */
{0, 0x9c, 0x0, DS_NO_SSC, F_D_OUT | FF_MEDIA_IO,
resp_atomic_write, NULL,
/* ATOMIC WRITE 16 */
{16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff} },
{0, 0x05, 0, DS_SSC, F_D_IN, resp_read_blklimits, NULL,
/* READ BLOCK LIMITS (6) */
{6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x2b, 0, DS_SSC, F_D_UNKN, resp_locate, NULL,
/* LOCATE (10) */
{10, 0x07, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xff, 0xc7, 0, 0,
0, 0, 0, 0} },
{0, 0x10, 0, DS_SSC, F_D_IN, resp_write_filemarks, NULL,
/* WRITE FILEMARKS (6) */
{6, 0x01, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x11, 0, DS_SSC, F_D_IN, resp_space, NULL,
/* SPACE (6) */
{6, 0x07, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x4, 0, DS_SSC, 0, resp_format_medium, NULL,
/* FORMAT MEDIUM (6) */
{6, 0x3, 0x7, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x19, 0, DS_SSC, F_D_IN, resp_erase, NULL,
/* ERASE (6) */
{6, 0x03, 0x33, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
/* 39 */
/* sentinel */
{0xff, 0, 0, 0, 0, NULL, NULL,
/* terminating element */
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
};
static int sdebug_num_hosts;
static int sdebug_add_host = DEF_NUM_HOST;
/* in sysfs this is relative */
static int sdebug_ato = DEF_ATO;
static int sdebug_cdb_len = DEF_CDB_LEN;
static int sdebug_jdelay = DEF_JDELAY;
/* if > 0 then unit is jiffies */
static int sdebug_dev_size_mb = DEF_DEV_SIZE_PRE_INIT;
static int sdebug_dif = DEF_DIF;
static int sdebug_dix = DEF_DIX;
static int sdebug_dsense = DEF_D_SENSE;
static int sdebug_every_nth = DEF_EVERY_NTH;
static int sdebug_fake_rw = DEF_FAKE_RW;
static unsigned int sdebug_guard = DEF_GUARD;
static int sdebug_host_max_queue;
/* per host */
static int sdebug_lowest_aligned = DEF_LOWEST_ALIGNED;
static int sdebug_max_luns = DEF_MAX_LUNS;
static int sdebug_max_queue = SDEBUG_CANQUEUE;
/* per submit queue */
static unsigned int sdebug_medium_error_start = OPT_MEDIUM_ERR_ADDR;
static int sdebug_medium_error_count = OPT_MEDIUM_ERR_NUM;
static int sdebug_ndelay = DEF_NDELAY;
/* if > 0 then unit is nanoseconds */
static int sdebug_no_lun_0 = DEF_NO_LUN_0;
static int sdebug_no_uld;
static int sdebug_num_parts = DEF_NUM_PARTS;
static int sdebug_num_tgts = DEF_NUM_TGTS;
/* targets per host */
static int sdebug_opt_blks = DEF_OPT_BLKS;
static int sdebug_opts = DEF_OPTS;
static int sdebug_physblk_exp = DEF_PHYSBLK_EXP;
static int sdebug_opt_xferlen_exp = DEF_OPT_XFERLEN_EXP;
static int sdebug_ptype = DEF_PTYPE;
/* SCSI peripheral device type */
static int sdebug_scsi_level = DEF_SCSI_LEVEL;
static int sdebug_sector_size = DEF_SECTOR_SIZE;
static int sdeb_tur_ms_to_ready = DEF_TUR_MS_TO_READY;
static int sdebug_virtual_gb = DEF_VIRTUAL_GB;
static int sdebug_vpd_use_hostno = DEF_VPD_USE_HOSTNO;
static unsigned int sdebug_lbpu = DEF_LBPU;
static unsigned int sdebug_lbpws = DEF_LBPWS;
static unsigned int sdebug_lbpws10 = DEF_LBPWS10;
static unsigned int sdebug_lbprz = DEF_LBPRZ;
static unsigned int sdebug_unmap_alignment = DEF_UNMAP_ALIGNMENT;
static unsigned int sdebug_unmap_granularity = DEF_UNMAP_GRANULARITY;
static unsigned int sdebug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS;
static unsigned int sdebug_unmap_max_desc = DEF_UNMAP_MAX_DESC;
static unsigned int sdebug_write_same_length = DEF_WRITESAME_LENGTH;
static unsigned int sdebug_atomic_wr = DEF_ATOMIC_WR;
static unsigned int sdebug_atomic_wr_max_length = DEF_ATOMIC_WR_MAX_LENGTH;
static unsigned int sdebug_atomic_wr_align = DEF_ATOMIC_WR_ALIGN;
static unsigned int sdebug_atomic_wr_gran = DEF_ATOMIC_WR_GRAN;
static unsigned int sdebug_atomic_wr_max_length_bndry =
DEF_ATOMIC_WR_MAX_LENGTH_BNDRY;
static unsigned int sdebug_atomic_wr_max_bndry = DEF_ATOMIC_WR_MAX_BNDRY;
static int sdebug_uuid_ctl = DEF_UUID_CTL;
static bool sdebug_random = DEF_RANDOM;
static bool sdebug_per_host_store = DEF_PER_HOST_STORE;
static bool sdebug_removable = DEF_REMOVABLE;
static bool sdebug_clustering;
static bool sdebug_host_lock = DEF_HOST_LOCK;
static bool sdebug_strict = DEF_STRICT;
static bool sdebug_any_injecting_opt;
static bool sdebug_no_rwlock;
static bool sdebug_verbose;
static bool have_dif_prot;
static bool write_since_sync;
static bool sdebug_statistics = DEF_STATISTICS;
static bool sdebug_wp;
static bool sdebug_allow_restart;
static enum {
BLK_ZONED_NONE = 0,
BLK_ZONED_HA = 1,
BLK_ZONED_HM = 2,
} sdeb_zbc_model = BLK_ZONED_NONE;
static char *sdeb_zbc_model_s;
enum sam_lun_addr_method {SAM_LUN_AM_PERIPHERAL = 0x0,
SAM_LUN_AM_FLAT = 0x1,
SAM_LUN_AM_LOGICAL_UNIT = 0x2,
SAM_LUN_AM_EXTENDED = 0x3};
static enum sam_lun_addr_method sdebug_lun_am = SAM_LUN_AM_PERIPHERAL;
static int sdebug_lun_am_i = (
int)SAM_LUN_AM_PERIPHERAL;
static unsigned int sdebug_store_sectors;
static sector_t sdebug_capacity;
/* in sectors */
/* old BIOS stuff, kernel may get rid of them but some mode sense pages
may still need them */
static int sdebug_heads;
/* heads per disk */
static int sdebug_cylinders_per;
/* cylinders per surface */
static int sdebug_sectors_per;
/* sectors per cylinder */
static LIST_HEAD(sdebug_host_list);
static DEFINE_MUTEX(sdebug_host_list_mutex);
static struct xarray per_store_arr;
static struct xarray *per_store_ap = &per_store_arr;
static int sdeb_first_idx = -1;
/* invalid index ==> none created */
static int sdeb_most_recent_idx = -1;
static DEFINE_RWLOCK(sdeb_fake_rw_lck);
/* need a RW lock when fake_rw=1 */
static unsigned long map_size;
static int num_aborts;
static int num_dev_resets;
static int num_target_resets;
static int num_bus_resets;
static int num_host_resets;
static int dix_writes;
static int dix_reads;
static int dif_errors;
/* ZBC global data */
static bool sdeb_zbc_in_use;
/* true for host-aware and host-managed disks */
static int sdeb_zbc_zone_cap_mb;
static int sdeb_zbc_zone_size_mb;
static int sdeb_zbc_max_open = DEF_ZBC_MAX_OPEN_ZONES;
static int sdeb_zbc_nr_conv = DEF_ZBC_NR_CONV_ZONES;
static int submit_queues = DEF_SUBMIT_QUEUES;
/* > 1 for multi-queue (mq) */
static int poll_queues;
/* iouring iopoll interface.*/
static atomic_long_t writes_by_group_number[64];
static char sdebug_proc_name[] = MY_NAME;
static const char *my_name = MY_NAME;
static const struct bus_type pseudo_lld_bus;
static struct device_driver sdebug_driverfs_driver = {
.name = sdebug_proc_name,
.bus = &pseudo_lld_bus,
};
static const int check_condition_result =
SAM_STAT_CHECK_CONDITION;
static const int illegal_condition_result =
(DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION;
static const int device_qfull_result =
(DID_ABORT << 16) | SAM_STAT_TASK_SET_FULL;
static const int condition_met_result = SAM_STAT_CONDITION_MET;
static struct dentry *sdebug_debugfs_root;
static ASYNC_DOMAIN_EXCLUSIVE(sdebug_async_domain);
static u32 sdebug_get_devsel(
struct scsi_device *sdp)
{
unsigned char devtype = sdp->type;
u32 devsel;
if (devtype < 32)
devsel = (1 << devtype);
else
devsel = DS_ALL;
return devsel;
}
static void sdebug_err_free(
struct rcu_head *head)
{
struct sdebug_err_inject *inject =
container_of(head, typeof(*inject), rcu);
kfree(inject);
}
static void sdebug_err_add(
struct scsi_device *sdev,
struct sdebug_err_inject *
new)
{
struct sdebug_dev_info *devip = (
struct sdebug_dev_info *)sdev->hostdata;
struct sdebug_err_inject *err;
spin_lock(&devip->list_lock);
list_for_each_entry_rcu(err, &devip->inject_err_list, list) {
if (err->type == new->type && err->cmd == new->cmd) {
list_del_rcu(&err->list);
call_rcu(&err->rcu, sdebug_err_free);
}
}
list_add_tail_rcu(&new->list, &devip->inject_err_list);
spin_unlock(&devip->list_lock);
}
static int sdebug_err_remove(
struct scsi_device *sdev,
const char *buf, size_t count)
{
struct sdebug_dev_info *devip = (
struct sdebug_dev_info *)sdev->hostdata;
struct sdebug_err_inject *err;
int type;
unsigned char cmd;
if (sscanf(buf,
"- %d %hhx", &type, &cmd) != 2) {
kfree(buf);
return -EINVAL;
}
spin_lock(&devip->list_lock);
list_for_each_entry_rcu(err, &devip->inject_err_list, list) {
if (err->type == type && err->cmd == cmd) {
list_del_rcu(&err->list);
call_rcu(&err->rcu, sdebug_err_free);
spin_unlock(&devip->list_lock);
kfree(buf);
return count;
}
}
spin_unlock(&devip->list_lock);
kfree(buf);
return -EINVAL;
}
static int sdebug_error_show(
struct seq_file *m,
void *p)
{
struct scsi_device *sdev = (
struct scsi_device *)m->
private;
struct sdebug_dev_info *devip = (
struct sdebug_dev_info *)sdev->hostdata;
struct sdebug_err_inject *err;
seq_puts(m,
"Type\tCount\tCommand\n");
rcu_read_lock();
list_for_each_entry_rcu(err, &devip->inject_err_list, list) {
switch (err->type) {
case ERR_TMOUT_CMD:
case ERR_ABORT_CMD_FAILED:
case ERR_LUN_RESET_FAILED:
seq_printf(m,
"%d\t%d\t0x%x\n", err->type, err->cnt,
err->cmd);
break;
case ERR_FAIL_QUEUE_CMD:
seq_printf(m,
"%d\t%d\t0x%x\t0x%x\n", err->type,
err->cnt, err->cmd, err->queuecmd_ret);
break;
case ERR_FAIL_CMD:
seq_printf(m,
"%d\t%d\t0x%x\t0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
err->type, err->cnt, err->cmd,
err->host_byte, err->driver_byte,
err->status_byte, err->sense_key,
err->asc, err->asq);
break;
}
}
rcu_read_unlock();
return 0;
}
static int sdebug_error_open(
struct inode *inode,
struct file *file)
{
return single_open(file, sdebug_error_show, inode->i_private);
}
static ssize_t sdebug_error_write(
struct file *file,
const char __user *ubuf,
size_t count, loff_t *ppos)
{
char *buf;
unsigned int inject_type;
struct sdebug_err_inject *inject;
struct scsi_device *sdev = (
struct scsi_device *)file->f_inode->i_private;
buf = kzalloc(count + 1, GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (copy_from_user(buf, ubuf, count)) {
kfree(buf);
return -EFAULT;
}
if (buf[0] ==
'-')
return sdebug_err_remove(sdev, buf, count);
if (sscanf(buf,
"%d", &inject_type) != 1) {
kfree(buf);
return -EINVAL;
}
inject = kzalloc(
sizeof(
struct sdebug_err_inject), GFP_KERNEL);
if (!inject) {
kfree(buf);
return -ENOMEM;
}
switch (inject_type) {
case ERR_TMOUT_CMD:
case ERR_ABORT_CMD_FAILED:
case ERR_LUN_RESET_FAILED:
if (sscanf(buf,
"%d %d %hhx", &inject->type, &inject->cnt,
&inject->cmd) != 3)
goto out_error;
break;
case ERR_FAIL_QUEUE_CMD:
if (sscanf(buf,
"%d %d %hhx %x", &inject->type, &inject->cnt,
&inject->cmd, &inject->queuecmd_ret) != 4)
goto out_error;
break;
case ERR_FAIL_CMD:
if (sscanf(buf,
"%d %d %hhx %hhx %hhx %hhx %hhx %hhx %hhx",
&inject->type, &inject->cnt, &inject->cmd,
&inject->host_byte, &inject->driver_byte,
&inject->status_byte, &inject->sense_key,
&inject->asc, &inject->asq) != 9)
goto out_error;
break;
default:
goto out_error;
break;
}
kfree(buf);
sdebug_err_add(sdev, inject);
return count;
out_error:
kfree(buf);
kfree(inject);
return -EINVAL;
}
static const struct file_operations sdebug_error_fops = {
.open = sdebug_error_open,
.read = seq_read,
.write = sdebug_error_write,
.release = single_release,
};
static int sdebug_target_reset_fail_show(
struct seq_file *m,
void *p)
{
struct scsi_target *starget = (
struct scsi_target *)m->
private;
struct sdebug_target_info *targetip =
(
struct sdebug_target_info *)starget->hostdata;
if (targetip)
seq_printf(m,
"%c\n", targetip->reset_fail ?
'Y' :
'N');
return 0;
}
static int sdebug_target_reset_fail_open(
struct inode *inode,
struct file *file)
{
return single_open(file, sdebug_target_reset_fail_show, inode->i_private);
}
static ssize_t sdebug_target_reset_fail_write(
struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
int ret;
struct scsi_target *starget =
(
struct scsi_target *)file->f_inode->i_private;
struct sdebug_target_info *targetip =
(
struct sdebug_target_info *)starget->hostdata;
if (targetip) {
ret = kstrtobool_from_user(ubuf, count, &targetip->reset_fail);
return ret < 0 ? ret : count;
}
return -ENODEV;
}
static const struct file_operations sdebug_target_reset_fail_fops = {
.open = sdebug_target_reset_fail_open,
.read = seq_read,
.write = sdebug_target_reset_fail_write,
.release = single_release,
};
static int sdebug_target_alloc(
struct scsi_target *starget)
{
struct sdebug_target_info *targetip;
targetip = kzalloc(
sizeof(
struct sdebug_target_info), GFP_KERNEL);
if (!targetip)
return -ENOMEM;
async_synchronize_full_domain(&sdebug_async_domain);
targetip->debugfs_entry = debugfs_create_dir(dev_name(&starget->dev),
sdebug_debugfs_root);
debugfs_create_file(
"fail_reset", 0600, targetip->debugfs_entry, starget,
&sdebug_target_reset_fail_fops);
starget->hostdata = targetip;
return 0;
}
static void sdebug_tartget_cleanup_async(
void *data, async_cookie_t cookie)
{
struct sdebug_target_info *targetip = data;
debugfs_remove(targetip->debugfs_entry);
kfree(targetip);
}
static void sdebug_target_destroy(
struct scsi_target *starget)
{
struct sdebug_target_info *targetip;
targetip = (
struct sdebug_target_info *)starget->hostdata;
if (targetip) {
starget->hostdata = NULL;
async_schedule_domain(sdebug_tartget_cleanup_async, targetip,
&sdebug_async_domain);
}
}
/* Only do the extra work involved in logical block provisioning if one or
* more of the lbpu, lbpws or lbpws10 parameters are given and we are doing
* real reads and writes (i.e. not skipping them for speed).
*/
static inline bool scsi_debug_lbp(
void)
{
return 0 == sdebug_fake_rw &&
(sdebug_lbpu || sdebug_lbpws || sdebug_lbpws10);
}
static inline bool scsi_debug_atomic_write(
void)
{
return sdebug_fake_rw == 0 && sdebug_atomic_wr;
}
static void *lba2fake_store(
struct sdeb_store_info *sip,
unsigned long long lba)
{
struct sdeb_store_info *lsip = sip;
lba = do_div(lba, sdebug_store_sectors);
if (!sip || !sip->storep) {
WARN_ON_ONCE(
true);
lsip = xa_load(per_store_ap, 0);
/* should never be NULL */
}
return lsip->storep + lba * sdebug_sector_size;
}
static struct t10_pi_tuple *dif_store(
struct sdeb_store_info *sip,
sector_t sector)
{
sector = sector_div(sector, sdebug_store_sectors);
return sip->dif_storep + sector;
}
static void sdebug_max_tgts_luns(
void)
{
struct sdebug_host_info *sdbg_host;
struct Scsi_Host *hpnt;
mutex_lock(&sdebug_host_list_mutex);
list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) {
hpnt = sdbg_host->shost;
if ((hpnt->this_id >= 0) &&
(sdebug_num_tgts > hpnt->this_id))
hpnt->max_id = sdebug_num_tgts + 1;
else
hpnt->max_id = sdebug_num_tgts;
/* sdebug_max_luns; */
hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1;
}
mutex_unlock(&sdebug_host_list_mutex);
}
enum sdeb_cmd_data {SDEB_IN_DATA = 0, SDEB_IN_CDB = 1};
/* Set in_bit to -1 to indicate no bit position of invalid field */
static void mk_sense_invalid_fld(
struct scsi_cmnd *scp,
enum sdeb_cmd_data c_d,
int in_byte,
int in_bit)
{
unsigned char *sbuff;
u8 sks[4];
int sl, asc;
sbuff = scp->sense_buffer;
if (!sbuff) {
sdev_printk(KERN_ERR, scp->device,
"%s: sense_buffer is NULL\n", __func__);
return;
}
asc = c_d ? INVALID_FIELD_IN_CDB : INVALID_FIELD_IN_PARAM_LIST;
memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE);
scsi_build_sense(scp, sdebug_dsense, ILLEGAL_REQUEST, asc, 0);
memset(sks, 0,
sizeof(sks));
sks[0] = 0x80;
if (c_d)
sks[0] |= 0x40;
if (in_bit >= 0) {
sks[0] |= 0x8;
sks[0] |= 0x7 & in_bit;
}
put_unaligned_be16(in_byte, sks + 1);
if (sdebug_dsense) {
sl = sbuff[7] + 8;
sbuff[7] = sl;
sbuff[sl] = 0x2;
sbuff[sl + 1] = 0x6;
memcpy(sbuff + sl + 4, sks, 3);
}
else
memcpy(sbuff + 15, sks, 3);
if (sdebug_verbose)
sdev_printk(KERN_INFO, scp->device,
"%s: [sense_key,asc,ascq"
"]: [0x5,0x%x,0x0] %c byte=%d, bit=%d\n",
my_name, asc, c_d ?
'C' :
'D', in_byte, in_bit);
}
static void mk_sense_buffer(
struct scsi_cmnd *scp,
int key,
int asc,
int asq)
{
if (!scp->sense_buffer) {
sdev_printk(KERN_ERR, scp->device,
"%s: sense_buffer is NULL\n", __func__);
return;
}
memset(scp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
scsi_build_sense(scp, sdebug_dsense, key, asc, asq);
if (sdebug_verbose)
sdev_printk(KERN_INFO, scp->device,
"%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n",
my_name, key, asc, asq);
}
/* Sense data that has information fields for tapes */
static void mk_sense_info_tape(
struct scsi_cmnd *scp,
int key,
int asc,
int asq,
unsigned int information,
unsigned char tape_flags)
{
if (!scp->sense_buffer) {
sdev_printk(KERN_ERR, scp->device,
"%s: sense_buffer is NULL\n", __func__);
return;
}
memset(scp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
scsi_build_sense(scp,
/* sdebug_dsense */ 0, key, asc, asq);
/* only fixed format so far */
scp->sense_buffer[0] |= 0x80;
/* valid */
scp->sense_buffer[2] |= tape_flags;
put_unaligned_be32(information, &scp->sense_buffer[3]);
if (sdebug_verbose)
sdev_printk(KERN_INFO, scp->device,
"%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n",
my_name, key, asc, asq);
}
static void mk_sense_invalid_opcode(
struct scsi_cmnd *scp)
{
mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_OPCODE, 0);
}
static int scsi_debug_ioctl(
struct scsi_device *dev,
unsigned int cmd,
void __user *arg)
{
if (sdebug_verbose) {
if (0x1261 == cmd)
sdev_printk(KERN_INFO, dev,
"%s: BLKFLSBUF [0x1261]\n", __func__);
else if (0x5331 == cmd)
sdev_printk(KERN_INFO, dev,
"%s: CDROM_GET_CAPABILITY [0x5331]\n",
__func__);
else
sdev_printk(KERN_INFO, dev,
"%s: cmd=0x%x\n",
__func__, cmd);
}
return -EINVAL;
/* return -ENOTTY; // correct return but upsets fdisk */
}
static void config_cdb_len(
struct scsi_device *sdev)
{
switch (sdebug_cdb_len) {
case 6:
/* suggest 6 byte READ, WRITE and MODE SENSE/SELECT */
sdev->use_10_for_rw =
false;
sdev->use_16_for_rw =
false;
sdev->use_10_for_ms =
false;
break;
case 10:
/* suggest 10 byte RWs and 6 byte MODE SENSE/SELECT */
sdev->use_10_for_rw =
true;
sdev->use_16_for_rw =
false;
sdev->use_10_for_ms =
false;
break;
case 12:
/* suggest 10 byte RWs and 10 byte MODE SENSE/SELECT */
sdev->use_10_for_rw =
true;
sdev->use_16_for_rw =
false;
sdev->use_10_for_ms =
true;
break;
case 16:
sdev->use_10_for_rw =
false;
sdev->use_16_for_rw =
true;
sdev->use_10_for_ms =
true;
break;
case 32:
/* No knobs to suggest this so same as 16 for now */
sdev->use_10_for_rw =
false;
sdev->use_16_for_rw =
true;
sdev->use_10_for_ms =
true;
break;
default:
pr_warn(
"unexpected cdb_len=%d, force to 10\n",
sdebug_cdb_len);
sdev->use_10_for_rw =
true;
sdev->use_16_for_rw =
false;
sdev->use_10_for_ms =
false;
sdebug_cdb_len = 10;
break;
}
}
static void all_config_cdb_len(
void)
{
struct sdebug_host_info *sdbg_host;
struct Scsi_Host *shost;
struct scsi_device *sdev;
mutex_lock(&sdebug_host_list_mutex);
list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) {
shost = sdbg_host->shost;
shost_for_each_device(sdev, shost) {
config_cdb_len(sdev);
}
}
mutex_unlock(&sdebug_host_list_mutex);
}
static void clear_luns_changed_on_target(
struct sdebug_dev_info *devip)
{
struct sdebug_host_info *sdhp = devip->sdbg_host;
struct sdebug_dev_info *dp;
list_for_each_entry(dp, &sdhp->dev_info_list, dev_list) {
if ((devip->sdbg_host == dp->sdbg_host) &&
(devip->target == dp->target)) {
clear_bit(SDEBUG_UA_LUNS_CHANGED, dp->uas_bm);
}
}
}
static int make_ua(
struct scsi_cmnd *scp,
struct sdebug_dev_info *devip)
{
int k;
k = find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS);
if (k != SDEBUG_NUM_UAS) {
const char *cp = NULL;
switch (k) {
case SDEBUG_UA_POR:
mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC,
POWER_ON_RESET_ASCQ);
if (sdebug_verbose)
cp =
"power on reset";
break;
case SDEBUG_UA_POOCCUR:
mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC,
POWER_ON_OCCURRED_ASCQ);
if (sdebug_verbose)
cp =
"power on occurred";
break;
case SDEBUG_UA_BUS_RESET:
mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC,
BUS_RESET_ASCQ);
if (sdebug_verbose)
cp =
"bus reset";
break;
case SDEBUG_UA_MODE_CHANGED:
mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC,
MODE_CHANGED_ASCQ);
if (sdebug_verbose)
cp =
"mode parameters changed";
break;
case SDEBUG_UA_CAPACITY_CHANGED:
mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC,
CAPACITY_CHANGED_ASCQ);
if (sdebug_verbose)
cp =
"capacity data changed";
break;
case SDEBUG_UA_MICROCODE_CHANGED:
mk_sense_buffer(scp, UNIT_ATTENTION,
TARGET_CHANGED_ASC,
MICROCODE_CHANGED_ASCQ);
if (sdebug_verbose)
cp =
"microcode has been changed";
break;
case SDEBUG_UA_MICROCODE_CHANGED_WO_RESET:
mk_sense_buffer(scp, UNIT_ATTENTION,
TARGET_CHANGED_ASC,
MICROCODE_CHANGED_WO_RESET_ASCQ);
if (sdebug_verbose)
cp =
"microcode has been changed without reset";
break;
case SDEBUG_UA_LUNS_CHANGED:
/*
* SPC-3 behavior is to report a UNIT ATTENTION with
* ASC/ASCQ REPORTED LUNS DATA HAS CHANGED on every LUN
* on the target, until a REPORT LUNS command is
* received. SPC-4 behavior is to report it only once.
* NOTE: sdebug_scsi_level does not use the same
* values as struct scsi_device->scsi_level.
*/
if (sdebug_scsi_level >= 6)
/* SPC-4 and above */
clear_luns_changed_on_target(devip);
mk_sense_buffer(scp, UNIT_ATTENTION,
TARGET_CHANGED_ASC,
LUNS_CHANGED_ASCQ);
if (sdebug_verbose)
cp =
"reported luns data has changed";
break;
case SDEBUG_UA_NOT_READY_TO_READY:
mk_sense_buffer(scp, UNIT_ATTENTION, UA_READY_ASC,
0);
if (sdebug_verbose)
cp =
"not ready to ready transition/media change";
break;
default:
pr_warn(
"unexpected unit attention code=%d\n", k);
if (sdebug_verbose)
cp =
"unknown";
break;
}
clear_bit(k, devip->uas_bm);
if (sdebug_verbose)
sdev_printk(KERN_INFO, scp->device,
"%s reports: Unit attention: %s\n",
my_name, cp);
return check_condition_result;
}
return 0;
}
/* Build SCSI "data-in" buffer. Returns 0 if ok else (DID_ERROR << 16). */
static int fill_from_dev_buffer(
struct scsi_cmnd *scp,
unsigned char *arr,
int arr_len)
{
int act_len;
struct scsi_data_buffer *sdb = &scp->sdb;
if (!sdb->length)
return 0;
if (scp->sc_data_direction != DMA_FROM_DEVICE)
return DID_ERROR << 16;
act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents,
arr, arr_len);
scsi_set_resid(scp, scsi_bufflen(scp) - act_len);
return 0;
}
/* Partial build of SCSI "data-in" buffer. Returns 0 if ok else
* (DID_ERROR << 16). Can write to offset in data-in buffer. If multiple
* calls, not required to write in ascending offset order. Assumes resid
* set to scsi_bufflen() prior to any calls.
*/
static int p_fill_from_dev_buffer(
struct scsi_cmnd *scp,
const void *arr,
int arr_len,
unsigned int off_dst)
{
unsigned int act_len, n;
struct scsi_data_buffer *sdb = &scp->sdb;
off_t skip = off_dst;
if (sdb->length <= off_dst)
return 0;
if (scp->sc_data_direction != DMA_FROM_DEVICE)
return DID_ERROR << 16;
act_len = sg_pcopy_from_buffer(sdb->table.sgl, sdb->table.nents,
arr, arr_len, skip);
pr_debug(
"%s: off_dst=%u, scsi_bufflen=%u, act_len=%u, resid=%d\n",
__func__, off_dst, scsi_bufflen(scp), act_len,
scsi_get_resid(scp));
n = scsi_bufflen(scp) - (off_dst + act_len);
scsi_set_resid(scp, min_t(u32, scsi_get_resid(scp), n));
return 0;
}
/* Fetches from SCSI "data-out" buffer. Returns number of bytes fetched into
* 'arr' or -1 if error.
*/
static int fetch_to_dev_buffer(
struct scsi_cmnd *scp,
unsigned char *arr,
int arr_len)
{
if (!scsi_bufflen(scp))
return 0;
if (scp->sc_data_direction != DMA_TO_DEVICE)
return -1;
return scsi_sg_copy_to_buffer(scp, arr, arr_len);
}
static char sdebug_inq_vendor_id[9] =
"Linux ";
static char sdebug_inq_product_id[17] =
"scsi_debug ";
static char sdebug_inq_product_rev[5] = SDEBUG_VERSION;
/* Use some locally assigned NAAs for SAS addresses. */
static const u64 naa3_comp_a = 0x3222222000000000ULL;
static const u64 naa3_comp_b = 0x3333333000000000ULL;
static const u64 naa3_comp_c = 0x3111111000000000ULL;
/* Device identification VPD page. Returns number of bytes placed in arr */
static int inquiry_vpd_83(
unsigned char *arr,
int port_group_id,
int target_dev_id,
int dev_id_num,
const char *dev_id_str,
int dev_id_str_len,
const uuid_t *lu_name)
{
int num, port_a;
char b[32];
port_a = target_dev_id + 1;
/* T10 vendor identifier field format (faked) */
arr[0] = 0x2;
/* ASCII */
arr[1] = 0x1;
arr[2] = 0x0;
memcpy(&arr[4], sdebug_inq_vendor_id, 8);
memcpy(&arr[12], sdebug_inq_product_id, 16);
memcpy(&arr[28], dev_id_str, dev_id_str_len);
num = 8 + 16 + dev_id_str_len;
arr[3] = num;
num += 4;
if (dev_id_num >= 0) {
if (sdebug_uuid_ctl) {
/* Locally assigned UUID */
arr[num++] = 0x1;
/* binary (not necessarily sas) */
arr[num++] = 0xa;
/* PIV=0, lu, naa */
arr[num++] = 0x0;
arr[num++] = 0x12;
arr[num++] = 0x10;
/* uuid type=1, locally assigned */
arr[num++] = 0x0;
memcpy(arr + num, lu_name, 16);
num += 16;
}
else {
/* NAA-3, Logical unit identifier (binary) */
arr[num++] = 0x1;
/* binary (not necessarily sas) */
arr[num++] = 0x3;
/* PIV=0, lu, naa */
arr[num++] = 0x0;
arr[num++] = 0x8;
put_unaligned_be64(naa3_comp_b + dev_id_num, arr + num);
num += 8;
}
/* Target relative port number */
arr[num++] = 0x61;
/* proto=sas, binary */
arr[num++] = 0x94;
/* PIV=1, target port, rel port */
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x4;
/* length */
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x0;
arr[num++] = 0x1;
/* relative port A */
}
/* NAA-3, Target port identifier */
arr[num++] = 0x61;
/* proto=sas, binary */
arr[num++] = 0x93;
/* piv=1, target port, naa */
arr[num++] = 0x0;
arr[num++] = 0x8;
put_unaligned_be64(naa3_comp_a + port_a, arr + num);
num += 8;
/* NAA-3, Target port group identifier */
arr[num++] = 0x61;
/* proto=sas, binary */
arr[num++] = 0x95;
/* piv=1, target port group id */
arr[num++] = 0x0;
arr[num++] = 0x4;
arr[num++] = 0;
arr[num++] = 0;
put_unaligned_be16(port_group_id, arr + num);
num += 2;
/* NAA-3, Target device identifier */
arr[num++] = 0x61;
/* proto=sas, binary */
arr[num++] = 0xa3;
/* piv=1, target device, naa */
arr[num++] = 0x0;
arr[num++] = 0x8;
put_unaligned_be64(naa3_comp_a + target_dev_id, arr + num);
num += 8;
/* SCSI name string: Target device identifier */
arr[num++] = 0x63;
/* proto=sas, UTF-8 */
arr[num++] = 0xa8;
/* piv=1, target device, SCSI name string */
arr[num++] = 0x0;
arr[num++] = 24;
memcpy(arr + num,
"naa.32222220", 12);
num += 12;
snprintf(b,
sizeof(b),
"%08X", target_dev_id);
memcpy(arr + num, b, 8);
num += 8;
memset(arr + num, 0, 4);
num += 4;
return num;
}
static unsigned char vpd84_data[] = {
/* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0,
0x22,0x22,0x22,0x0,0xbb,0x1,
0x22,0x22,0x22,0x0,0xbb,0x2,
};
/* Software interface identification VPD page */
static int inquiry_vpd_84(
unsigned char *arr)
{
memcpy(arr, vpd84_data,
sizeof(vpd84_data));
return sizeof(vpd84_data);
}
/* Management network addresses VPD page */
static int inquiry_vpd_85(
unsigned char *arr)
{
int num = 0;
const char *na1 =
"https://www.kernel.org/config";
const char *na2 =
"http://www.kernel.org/log";
int plen, olen;
arr[num++] = 0x1;
/* lu, storage config */
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x0;
olen = strlen(na1);
plen = olen + 1;
if (plen % 4)
plen = ((plen / 4) + 1) * 4;
arr[num++] = plen;
/* length, null termianted, padded */
memcpy(arr + num, na1, olen);
memset(arr + num + olen, 0, plen - olen);
num += plen;
arr[num++] = 0x4;
/* lu, logging */
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x0;
olen = strlen(na2);
plen = olen + 1;
if (plen % 4)
plen = ((plen / 4) + 1) * 4;
arr[num++] = plen;
/* length, null terminated, padded */
memcpy(arr + num, na2, olen);
memset(arr + num + olen, 0, plen - olen);
num += plen;
return num;
}
/* SCSI ports VPD page */
static int inquiry_vpd_88(
unsigned char *arr,
int target_dev_id)
{
int num = 0;
int port_a, port_b;
port_a = target_dev_id + 1;
port_b = port_a + 1;
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x0;
arr[num++] = 0x1;
/* relative port 1 (primary) */
memset(arr + num, 0, 6);
num += 6;
arr[num++] = 0x0;
arr[num++] = 12;
/* length tp descriptor */
/* naa-5 target port identifier (A) */
arr[num++] = 0x61;
/* proto=sas, binary */
arr[num++] = 0x93;
/* PIV=1, target port, NAA */
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x8;
/* length */
put_unaligned_be64(naa3_comp_a + port_a, arr + num);
num += 8;
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x0;
arr[num++] = 0x2;
/* relative port 2 (secondary) */
memset(arr + num, 0, 6);
num += 6;
arr[num++] = 0x0;
arr[num++] = 12;
/* length tp descriptor */
/* naa-5 target port identifier (B) */
arr[num++] = 0x61;
/* proto=sas, binary */
arr[num++] = 0x93;
/* PIV=1, target port, NAA */
arr[num++] = 0x0;
/* reserved */
arr[num++] = 0x8;
/* length */
put_unaligned_be64(naa3_comp_a + port_b, arr + num);
num += 8;
return num;
}
static unsigned char vpd89_data[] = {
/* from 4th byte */ 0,0,0,0,
'l',
'i',
'n',
'u',
'x',
' ',
' ',
' ',
'S',
'A',
'T',
' ',
's',
'c',
's',
'i',
'_',
'd',
'e',
'b',
'u',
'g',
' ',
' ',
'1',
'2',
'3',
'4',
0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,
0xec,0,0,0,
0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0,
0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33,
0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31,
0x53,0x41,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
0x20,0x20,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
0x10,0x80,
0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0,
0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0,
0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0,
0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40,
0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0,
--> --------------------
--> maximum size reached
--> --------------------
